Built for sustainability Built for the environment Built for fuel efficiency Built for life

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2 Integrity and London s first and jointly England s first Certified Passivhaus Built for sustainability Built for the environment Built for fuel efficiency Built for life Coming Soon to Cambridge the City s first certifiable Passivhaus

3 Integrity Buildings and Passivhaus The route to low energy, zero carbon, sustainable, environmentally friendly, healthy and comfortable buildings for life Welcome to tomorrows buildings today Between 80 and 90% of our life is typically spent inside buildings. Their design, systems materials and operations directly affect our health, comfort, wellbeing and productivity. Passivhaus is a sustainable construction standard that provides for affordable, high-quality buildings as well as comfortable, healthy living conditions. It drives the design and construction to a higher standard, carefully considering efficient allocation of heat loss, orientation, airtight construction, glazing, solar gains, mechanical ventilation with heat recovery and high insulation for homes and buildings. One of the main Passivhaus drivers is human comfort where people can be warm (or cool) and comfortable. Integrity Buildings has a passionate, clear and unambiguous vision, to operate at the forefront and become the brand name synonymous with the delivery of a range of high quality, low energy, zero carbon, sustainable and environmentally friendly homes, buildings and communities constructed to or better than Passivhaus standard. We were main contractor on London's first certified Passivhaus and jointly England's first. Integrity provide a one-stop-shop for the complete design & build service, to architects and others we act as main contractor A properly designed and constructed Passivhaus home or building, can be compared to a swimming pool keeping all the water in a conventional home or building let s all the water leak out! Legislation is significant and growing

4 What is Passivhaus? The term Passivhaus (or nearly zero energy building) is a construction standard, a standard that is truly energy efficient, comfortable, affordable and ecological. The standard can be met using a variety of technologies, designs and materials, and is a refinement of the low-energy house standard. A Passivhaus is more than just a low energy building: Passivhaus allow for energy savings of up to 90% compared with typical buildings and over 75% compared with average new constructions, Passivhaus are also praised for their high level of comfort, use energy sources inside the building such as the body heat from the residents or solar heat entering the building, special triple glazed windows, highly insulated exterior walls, roof and floor slab keep the desired warmth in the house, a ventilation system consistently supplies fresh filtered air making for superior air quality without causing any unpleasant draughts, and a highly efficient heat recovery unit allows for the heat contained in the exhaust air to be re-used. The five basic principles of Passivhaus design are:

5 What is EnerPHit? EnerPHit is the standard issued by the Passivhaus Institute that focuses on retrofit projects. It sets a slightly different standard requirement to the full Passivhaus standard. The retrofit arena, is vital and the largest area where we can produce real energy efficiency Retrofitting or renovating an existing property can significantly reduce your annual heating energy requirements and carbon dioxide emissions by between 75 and 90% compared to an average existing building. As older buildings and homes use even more energy than the average new construction, they offer even greater potential for energy savings and consequential saving in CO 2 emissions. Performance Comparison between a typical new build, a new Passivhaus and a retrofit EnerPHit standard: The energy losses in a typical existing house are approximately as follows: Walls 50% Roof 20% Ventilation 15% Windows 10% Floor 5% We have found that the following key measures have proved to be particularly effective: improved thermal insulation, reduction of thermal bridges, improved air tightness, use of very good quality windows, ventilation with highly efficient heat recovery One of the challenges with existing buildings and homes is that each and every one is unique and also has its own interesting choices. Integrity firmly believes that for Retrofit to appeal to home owners, universities, schools, and businesses, we will need to address the works that are to be carried out, the cost and the pay-back period. The incentives for our Clients include: Greatly reduced energy bills, Energy Security, Improved comfort conditions, Potentially increased property values. The work to a proposed retrofit project must be looked at a whole-building approach, even if not all works can be carried out in the same phase, they should all be carefully designed, calculated and the most cost effective programme put in place.

6 Passivhaus and EnerPHit Benefits Passivhaus is the Quality Control standard for all new and retrofit homes, buildings and communities The benefits of a Passivhaus include: maximum energy efficiency reduces energy consumption significantly reduced heating costs environment friendly requires less energy to run than ½ a hair dryer high user comfort constant fresh, filtered air in all rooms fine particulate air filter in the incoming air supply for pollen-free air easy accessibility for maintenance and servicing minimal acoustic values no unpleasant domestic odours no humidity problems building green Performance Outline Specification: compact form and good insulation southern orientation and shade consideration energy-efficient window glazing and frames building envelope air-tightness highly efficient heat recovery thermal bridge free construction Passivhaus Standard built by Integrity: Fabric first approach less than 15 kwh/m²/yr for heating or cooling (relating to the living space) insulated to achieve a U-Value that does not exceed 0.15W/m2/K Passive use of solar energy triple glazed units, U-Value that does not exceed 0.80W/m2/K, with solar heat gain coefficients around 50% air leakage less than 0.60 times the house volume per hr. most of the perceptible heat in the exhaust air is transferred to the incoming fresh air (heat recovery rate over 80%) our Green-Cube provides annual energy consumption of less than 500kWh

7 Wellbeing and Productivity There is growing recognition that to be truly effective, a building or home will need to succeed across two interrelated domains: environmental sustainability and human wellbeing. The internal environment of an office, school, university or home, is one where we spend so much of our time, and research has shown that the materials used to build and furnish the building are a major contributor to the wellbeing and quality of life for the occupants. At Integrity we believe that the links between Green/Passivhaus buildings and Company Performance can be shown as follows: Financial Outcomes Human Resource Reduced resource utilisation Improved wellbeing Reduced operating and maintenance costs Improved quality of work life Reduced risks Improved productivity Increased productivity Reduced staff turnover Increased rent/resale value Reduced sick building syndrome Reduced absenteeism Increased ability to attract high quality staff Business Process Outcomes Stakeholder Relations Process innovation Improved Public Image Increased work process efficiency Increased ability to sell to pro-environmental clients Community outreach and education Improved community stakeholder relationship From a business perspective, can green buildings (Passivhaus/EnerPHit) affect high-level organisational outcomes, such as profitability, employee and customer satisfaction? At Integrity we strongly believe that our standard coupled with carefully selected sustainable materials and solutions are relevant to business interests across the full spectrum of concerns, from portfolio issues (resale and rent value, etc.) to enhanced quality of wellbeing and productivity. Companies are thinking of their buildings as a way to achieve strategic goals, sustainability is rapidly becoming a strategic asset for the future

8 How do Passivhaus and EnerPHit work? The Passivhaus is the world leading standard in energy-efficient construction: A Passivhaus requires as little as 10 % of the energy used by typical building meaning an energy savings of up to 90 %. The Passivhaus considerations Mechanical ventilation with heat recovery The health and comfort of the inhabitants is the most important objectives of a Passivhaus design. Excellent air quality is vital; this can only be achieved in an airtight house if used exhaust air is exchanged with fresh outdoor air at regular intervals. This drawing demonstrates the principles of a heat recovery system: We, along with activities such as cooking, showering, televisions etc. all produce heat. The heat recovery system then uses this to heat the building. Warm exhaust air flows via the extract ventilation system and delivers heat to plates. This exhaust air leaves the unit cooled. On the opposite side of the exchanger plates, filtered fresh air flows in separate channels. This fresh air absorbs the heat from the plates and will leave the exchanger unit with a higher temperature (but still unpolluted). This heated fresh supply air then leaves the unit to be distributed via the ventilation system to the living areas. Our fully integrated Green-Cube provides heating in winter, cooling in summer and hot water. It has an annual energy consumption of less than 500kWh, using less than half an average hairdryers energy Orientation Where possible a Passivhaus building should be orientated along an east/west principle axis, so that the building s main glazed façade is within 30 degrees of due south. This allows the building to derive maximum benefit from useful solar gains during the winter months. With good planning where a south facing orientation is not possible a Passivhaus building can still be realised. Building Form The compactness of a building is indicated by the surface area to volume (A/V) ratio. This ratio between the external surface of a building and its internal volume has a considerable influence on the overall energy demand. A variant of the A/V ratio known as the Form Factor looks at the relationship between external Area (A) and the internal Treated Floor Area (TFA). An irregularly formed can still be designed to Passivhaus standard, however, increased care especially to the insulation needs to be assessed (normally thicker required). U Values of fabric and opaque elements The Passivhaus standard requires that all thermal elements have a very good U Value. The recommended limits are: Walls, floors and roof Window installation 0.15 W/m2K 0.85 W/m2K

9 Thermal bridge free design Special attention given to eliminate thermal bridges, which is a component, or assembly of components, in a building envelope through which heat is transferred at a substantially higher rate than through the surrounding envelope area. Airtight Construction Building envelopes under the Passivhaus standard must be extremely airtight compared to conventional construction. Air barriers, careful sealing of every construction joint in the building envelope and sealing of all service penetrations through it are all utilised to achieve the standard. To reach Passivhaus standard, air leakage through unsealed joints must be less than 0.60 times the house volume per hour( 0.60 ac/h@50pa), this is around 10 times better than a typical new-build house. Glazing, solar gains and shading Within the UK Passivhaus buildings must use triple glazed windows, to reduce unwanted heat loss and to increase the surface temperature of the inner pane, thereby reducing draughts. Since windows also allow for direct and indirect sunlight to enter the building, Passivhaus windows provide for positive energy balances during cold winters. Whereas conventional windows can be considered holes in the facade through which great amounts of energy are lost, Passivhaus windows allow for net energy gains, provided that excessive shading is prevented and that they are facing anywhere between south-east and south-west. A central part of the Passivhaus principle is to make use of solar gains in winter to reduce the heating demand. This can mean that there is a potential for overheating in the summer, particularly where south facing glazing has been maximised. Therefore it may be necessary to incorporate some external shading to reduce the direct solar gains in the summer. Insulation In low-energy buildings the entire building envelope is highly insulated. The building envelope consists of all the building elements which separate the inside from the outside. Its main purpose is to provide for a comfortable indoor climate irrespective of the outdoor climate which is determined by the weather. Heat losses through external walls and roofs account for more than 70% of the total heat losses in existing buildings. Therefore, improving thermal insulation is the most effective way to save energy. At the same time it will help improve thermal comfort and prevent structural damage The heat losses during cold periods are thus negligibly small, and the temperature of the interior surfaces is nearly the same as the air temperature, irrespective of the type of heating used. This leads to a very high level of comfort and reliable prevention of building damage due to moisture build up.

10 Integrity was founded in 2009 with a clear vision to provide Passivhaus building technologies and utilise expertise from around the world to create low energy buildings at affordable prices. Integrity and its association with other key parties combined with its in-house, working knowledge of the UK construction industry possesses expertise necessary to develop and exceed this technically challenging market. Integrity is structured to implement our clients complex requirements with tailored solutions characterised by sustainability, efficiency and wellbeing. We always strive to provide technical and aesthetic quality combined, ultimately, with the long term health, productivity and financial benefits to our customers and the environment. Reliability and target orientation are the key objectives of the entire team. In the future, Integrity strongly believe that we cannot only look at new or retrofitted individual homes and buildings in isolation, but we must look at the community as a whole with clusters and clouds: Living Teaching Working Shopping Leisure Overview of our services: Project Construction / Project Development Design Development Design Development Land Search Consultancy Planning Permissions and Building Control Quality Assurance Planning Tendering Procedures Support of Procedures Project Management Integrity Buildings the "one-stop-shop" for designing and building your Passivhaus, EnerPhit or eco building.

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12 Integrity Buildings and Passivhaus low energy, zero carbon, sustainable, environmentally friendly, healthy, and comfortable buildings for life Integrity Buildings Limited 14 Lakeside Park Drive Reydon Southwold Suffolk IP18 6YB Integrity Buildings Limited Phone: +44 (0) Registered Office: Maple Court, Hacheston, Woodbridge, Suffolk IP13 ODS